She has the perfect amulet now. She can now enter the keeper's world. The sphere was parallel to the two human worlds and to the demon's world. If the high priestess place was a place for soul resting. The keeper's place was a place of monsters. It would be very difficult for humans to enter the demon's world. They must journey thtough the keeper's sphere with thousands of monsters.
She asked the name of the sphere on the silver book, and it's called "Anahadda," a place of monsters. It was sealed, along with her world, by the first seeker. The second generation of seekers and keepers tried to create an artificial monolithic structure that served as portals between the human world and the demon world.